GSM II Alarm: have battery backup in case of power failure?

[admin]

Does it have battery for back up in case of power failure? How long it can be on standby without power?

NHG9D is a wired and wireless compatible burglar alarm system, it has no built-in rechargeable backup battery. However, an external UPS power adapter can be added separately.

http://www.best-china-security-supplies ... cts_id=861

This UPS battery can supply a few hours of electricity in case of power failure.

There is another version LMG9Q that is a quad band GSM version supporting 850/900/1800/1900 GSM network. That will have a built-in backup battery.

http://www.best-china-security-supplies ... ts_id=1565